The European Tertiary Education Register (ETER) data for the academic year 2021/2022 are now available online. With this release, ETER provides longitudinal data for the period 2011-2021; this allows examining changes over time in European higher education. The ETER perimeter covers all 27 European Union member states, EEA-EFTA countries (Iceland, Liechtenstein, Norway and Switzerland), and candidate countries (Albania, Bosnia-Herzegovina, Kosovo, the Republic of North Macedonia, Montenegro, Serbia and Turkey), as well as the UK, Holy See and Andorra, for a total of 41 countries and about 3500 higher education institutions. For almost all countries included in ETER, data for 2021 is already available online.